#ifndef MD5_H
#define MD5_H

/*
***********************************************************************
** md5.h -- header file for implementation of MD5                    **
** RSA Data Security, Inc. MD5 Message-Digest Algorithm              **
** Created: 2/17/90 RLR                                              **
** Revised: 12/27/90 SRD,AJ,BSK,JT Reference C version               **
** Revised (for MD5): RLR 4/27/91                                    **
**   -- G modified to have y&~z instead of y&z                       **
**   -- FF, GG, HH modified to add in last register done             **
**   -- Access pattern: round 2 works mod 5, round 3 works mod 3     **
**   -- distinct additive constant for each step                     **
**   -- round 4 added, working mod 7                                 **
***********************************************************************
*/

/*
* Edited 7 May 93 by CP to change the interface to match that
* of the MD5 routines in RSAREF.  Due to this alteration, this
* code is "derived from the RSA Data Security, Inc. MD5 Message-
* Digest Algorithm".  (See below.)  Also added argument names
* to the prototypes.
*/

/*
***********************************************************************
** Copyright (C) 1990, RSA Data Security, Inc. All rights reserved.  **
**                                                                   **
** License to copy and use this software is granted provided that    **
** it is identified as the "RSA Data Security, Inc. MD5 Message-     **
** Digest Algorithm" in all material mentioning or referencing this  **
** software or this function.                                        **
**                                                                   **
** License is also granted to make and use derivative works          **
** provided that such works are identified as "derived from the RSA  **
** Data Security, Inc. MD5 Message-Digest Algorithm" in all          **
** material mentioning or referencing the derived work.              **
**                                                                   **
** RSA Data Security, Inc. makes no representations concerning       **
** either the merchantability of this software or the suitability    **
** of this software for any particular purpose.  It is provided "as  **
** is" without express or implied warranty of any kind.              **
**                                                                   **
** These notices must be retained in any copies of any part of this  **
** documentation and/or software.                                    **
***********************************************************************
*/

/* typedef a 32-bit type */
#ifdef __alpha
typedef unsigned int UINT4;
#else
typedef unsigned long int UINT4;
#endif

/* Data structure for MD5 (Message-Digest) computation */
typedef struct {
	UINT4 buf[4];                                    /* scratch buffer */
	UINT4 i[2];                   /* number of _bits_ handled mod 2^64 */
	unsigned char in[64];                              /* input buffer */
} MD5_CTX;

#ifdef __cplusplus
extern "C" {
#endif
	
	void MD5Init(MD5_CTX *mdContext);
	void MD5Update(register MD5_CTX *mdContext, unsigned char *bug, unsigned int len);
	void MD5Final(unsigned char digest[16], MD5_CTX *mdContext);
	void MD5Transform(register UINT4 *buf, register UINT4 *in);
	
	extern void CalcMD5( const void *data, unsigned int len, void *dest );
	
#ifdef __cplusplus
};
#endif


#endif /* MD5_H */
